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Sarcoplasm does not contain any glycogen.
False
Myoglobin is a red-colored protein that binds to oxygen in muscle fibers.
True
The sarcoplasmic reticulum stores calcium ions in a contracted muscle fiber.
False
The A band of a sarcomere contains thin filaments but not thick filaments.
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The Z disc separates adjacent sarcomeres in muscle fibers.
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Skeletal muscles are responsible for stabilizing body position.
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The endomysium is the outermost layer of connective tissue surrounding the muscle.
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The plasma membrane of a muscle cell is referred to as the sarcoplasm.
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Muscle tissue has the ability to generate heat during contraction.
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Cardiac muscle is one of the three types of muscular tissue found in the human body.
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Nerve supply to skeletal muscles includes autonomic motor neurons.
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Each muscle fiber in skeletal muscle contains multiple nuclei found just beneath the sarcolemma.
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The perimysium surrounds individual muscle fibers in a skeletal muscle.
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The M line contains overlapping actin and myosin filaments.
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Acetylcholine is released by somatic motor neurons at the neuromuscular junction.
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The production of muscle action potential occurs when sodium flows out of the membrane.
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Calcium binds to troponin to initiate the contraction cycle.
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Creatine phosphate is synthesized when the muscle is in an active state.
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Each glucose molecule can produce 36 ATP molecules through aerobic respiration.
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Anaerobic respiration requires oxygen to produce ATP.
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Aerobic respiration provides more than 90% of the necessary ATP in activities lasting more than 10 minutes.
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A motor unit comprises a single motor neuron and all the muscle fibers it innervates.
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Fast-twitch fibers are associated with endurance activities and fatigue resistance.
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Isotonic contractions result in the muscle changing length while producing movement.
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Incomplete tetanus occurs when muscle fibers relax completely between stimuli.
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Motor units that control smaller muscle fibers typically allow for greater precision and control.
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Muscles generate the most force when they are too stretched and too contracted.
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Lactic acid is produced from glucose during the respiration process in muscles.
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Abduction refers to the movement of a limb away from the midline of the body.
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The force generated by a muscle during contraction is referred to as muscle endurance.
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Fatigue in muscles leads to an increase in tension over time.
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Complete tetanus results in a state of maximal contraction with no relaxation between stimuli.
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Circumduction involves moving a limb in a straight line.
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Hyperextension occurs when a joint is moved beyond the anatomical position.
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The biceps muscle is named for having three heads.
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Adduction is the movement of a limb toward the midline of the body.
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The quadriceps muscle contains three heads.
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